Loose leaf to be used with a carbon for bookkeeping machines or the like



' Jam 17, 1928.' L656$866 J. MLLER LOOSE LEAF TO BE USED WITH A CARBONFOR BOOKKEEPING MACHINES 0R THE LIKE Patented Jan. 17, 1928.

UNITED VsT.\.Tr ".s

PATENT oFFlcE.

.moon MLLER, or SIEGEN, GERMANY.

L OOSE LEAF T BE USED WITH A CARBOLEOR BOOKKEEPING MACHINS OR THE LIKE.

Application ledMay 11, 1927, Serial :Nm-190,628, and in Germany January24, 1927.

s. In bookkeeping machines or the like, it frequently happens that thecarbon sheet to be usedl with a loose leaf successively receive ing thesingle entries gets displaced or bentover at its corners'whereby theblank spaces vat the sides of the leaf are soiled or the entries areincorrectly copied, while besides it is tiniefwasting and .cumbersome toplace the carbon sheet in its proper position. on the leaf and sointroduce leaf .and carbon sheet into themachine forV eachsingle entryto `be made. The present invention provides improved means by which thecarbon sheet is securely fastened in its proper position on the leafbefore its introduction 'into theinachine .and not removed therefromuntil the leaf has been completely filled-up. Y

The accompanying drawing illustrates the improvement: Figs. l and 2 areplan views of the leaf, with and without the carbon sheet thereon, whileFig. 3 lis an enlarged cross-section through the upper and lower lendsof the leaf with thecarbon sheet on the 'line 3-3 of Fig. 2. I

The leaf a is on` both Sides provided with blank longitudinal marginalspaces b, c and with holes Z for thereception of file pinos, the carbonsheet f of equal height to that of-said leaf and o f a breadth requiredfor the entries to be copied being fastened to said leaf beforeintroducing it into'the-lnachine.

Y To this end, the carbon sheet is at its upper and lower ends providedwith inwardly dii rected pockets g' which can he fitted over that part iof upper andlower ends of ing blank longitudinal marginal spaces at 57.whole breadth of the leaf at the upper and f? the leaf a locatedbetween said blank spaces b, o and bounded by slots lain said ends of adepth corresponding to that of the pockets g. Said ends z' are providedwith a de- 4o taching line, for instance with'small perforations c orthe like, running over the whole breadth of the leaf a at a distancefrom the upper and lower edges of the latter corre spondiingf to thedepth of said slots It, for the purpose of detaching said ends i fromthe leaf before ling theilled-up leaf in aV binder or the like, so that,said ends, or their slots L, do not form any impediments but the leafhas then uninterrupted upper and lower edges.

What I claim, is: The combination with a leaf for bookkeeping machinesor the like, said leaf havboth sides-thereof and that part of the upperand lower ends of the leaf located between said blank spaces beingbounded by slots therein, of a detnching line running over the lowerends and at a distance from the upper and lower edges thereofcorresponding tothe depth ofthe slots therein, and a carbon sheet havinginwardly directed pockets on its upperwand lower edges and fastened 2'therewith on said leaf by its pockets'einbrac-- ing the slot-boundedpart of the upper and lower ends of said leaf.

n testimony. whereof I have hereunto set my hand.

-.moon MLLER.

